Parenchymal, airway, and vessel spatial transcriptomics signature in COPD
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ABSTRACT:
ORGANISM(S): synthetic construct Homo sapiens
PROVIDER: GSE292993 | GEO | 2025/11/14
REPOSITORIES: GEO
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Project description:Parenchymal, airway, and vessel spatial transcriptomics signature in COPD
| PRJNA1242313 | ENA
Project description:Background: Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease of the lungs that is currently the fourth leading cause of death worldwide. Genetic factors account for only a small amount of COPD risk, but epigenetic mechanisms including DNA methylation, have the potential to mediate the interactions between an individual?s genetics and environmental exposure. DNA methylation is highly cell type specific and individual cell type studies of DNA methylation in COPD are sparse. Fibroblasts are present within the airway and parenchyma of the lung and contribute to the aberrant deposition of extracellular matrix in COPD. No assessment or comparison of genome-wide DNA methylation profiles in airway and parenchymal fibroblasts from individuals with and without COPD has been undertaken. These data provide valuable insight into the molecular mechanisms contributing to COPD and the differing pathologies of small airways disease and emphysema in COPD. Methods: Genome-wide DNA methylation was evaluated at over 485,000 CpG sites using the Illumina Infinium HumanMethylation450 BeadChip array in airway (non-COPD n=8, COPD n=7) and parenchymal fibroblasts (non-COPD n=18, COPD n=28) isolated from individuals with and without COPD. Targeted gene expression was assessed by qPCR in matched RNA samples. Results: Differentially methylated DNA regions were identified between cells isolated from individuals with and without COPD in both airway and parenchymal fibroblasts. Only in parenchymal fibroblasts was differential DNA methylation associated with differential gene expression. A second analysis of differential DNA methylation variability identified 359 individual differentially variable CpG sites in parenchymal fibroblasts. No differentially variable CpG sites were identified in airway fibroblasts. Five differentially variable methylated CpG sites, associated with three genes were subsequently assessed for gene expression differences. Two genes (OAT and GRIK2) displayed significantly increased gene expression in cells isolated from individuals with COPD. Conclusions: Differential and variable DNA methylation was associated with COPD status in parenchymal fibroblasts but not airway fibroblasts. Aberrant DNA methylation was associated with altered gene expression imparting biological function to DNA methylation changes. Changes in DNA methylation are therefore implicated in the molecular mechanisms underlying COPD pathogenesis and may represent novel therapeutic targets.
2018-03-06 | GSE111396 | GEO
Project description:DNA methylation in airway and parenchymal fibroblasts from individuals with and wthout COPD
| PRJNA436913 | ENA
Project description:Chronic obstructive pulmonary disease (COPD) is characterized by lung parenchymal destruction and small airway remodeling, involving processes like inflammation, cell apoptosis, epithelial-mesenchymal transition (EMT), and collagen deposition. There are currently no targeted drugs for airway remodeling. Bone marrow mesenchymal stem cells (BMSCs) show promise in COPD treatment, yet their impact on airway remodeling and underlying mechanisms remain elusive. Transfer RNA-derived small RNAs (tsRNAs) are non-coding RNAs implicated in disease regulation, but their role in COPD and their modulation by BMSCs remain unexplored. Our study assessed BMSC effects on airway remodeling in a COPD mouse model and constructed tsRNA and mRNA expression profiles. Based on the differentially expressed tsRNA-mRNA target pairs identified by tsRNA and mRNA sequencing, we constructed a tsRNA regulatory network linked to COPD airway remoding. The modulation of tsRNA by MSCs may represent one of the pathways through which they ameliorate COPD airway remodeling. Our research will enrich the understanding of BMSC therapy for COPD and provide greater insight into the molecular mechanisms underlying the progression and treatment of airway remodeling.
2024-12-05 | GSE262564 | GEO
Project description:Using Geomx's Digital Space Profiling method for WTA RNA transcriptomics in lung tertiary lymphoid structures (TLS, follicles), we assessed paraffin-embedded and OCT-embedded lung sections from 48 patients, which were classified as Never Smoker Controls (NSC, n=8), Smoker Controls (SC, n=13), and COPD GOLD1-4 patients (n=27 patients). we identified 19 patients with tertiary lymphoid structures (TLS), distributed as 13 COPD patients and 6 SC subjects, with 115 TLS data used for the final data analysis.
2023-11-21 | GSE237120 | GEO
Project description:Programmatic Introduction of Parenchymal Cell Types in Blood Vessel Organoids
| PRJNA689773 | ENA
Project description:Upregulation of Expression of the Ubiquitin Carboxyl Terminal Hydrolase L1 Gene in Human Airway Epithelium of Cigarette Smokers The microarray data deposited here is from 39 HG-U133 Plus 2.0 GeneChips, from 12 normal non-smokers, 12 phenotypic normal smokers, 9 Early COPD and 6 COPD individuals, all small airways, all small airway. A subset of these samples have been already submitted under GEO Accession Number GSE 4498. These are: 12 non-smokers samples (GSM101095-GSM101106) and 10 smoker samples (GSM101107-GSM101116). These 22 samples that are also in GSE4498 were described in Harvey, B-G; Heguy, A.; Leopold, P.L.; Carolan, B.; Ferris, B. and Crystal R.G. Modification of Gene Expression of the Small Airway Epithelium in Response to Cigarette Smoking. J. Mol. Med (in press). These data are part of a study aimed at understanding how cigarette smoking modifies neuroendocrine cells, in which microarray analysis with TaqMan confirmation was used to assess airway epithelial samples obtained by fiberoptic bronchoscopy from 81 individuals (normal nonsmokers, normal smokers, smokers with early COPD and smokers with established COPD). Of 11 genes considered to be neuroendocrine cell-specific, only ubiquitin C-terminal hydrolase L1(UCHL1), a member of the ubiquitin proteasome pathway, was consistently upregulated in smokers compared to nonsmokers. Up-regulation of UCHL1 at the protein level was observed with immunohistochemistry of bronchial biopsies of smokers compared to nonsmokers. Interestingly, however, while UCHL1 expression was present only in neuroendocrine cells of the airway epithelium in nonsmokers, UCHL1 expression was also expressed in ciliated epithelial cells in smokers, an intriguing observation in light of recent observations that ciliated cells can are capable of transdifferentiating to other airway epithelium. In the context that UCHL1 is involved in the degradation of unwanted, misfolded or damaged proteins within the cell and is overexpressed in >50% of lung cancers, its overexpression in chronic smokers may represent an early event in the complex transformation from normal epithelium to overt malignancy. Keywords: non-smokers vs phenotypic normal smokers, smokers with early COPD, and smokers with COPD
2006-11-21 | GSE5058 | GEO
Project description:Chronic obstructive pulmonary disease (COPD) collectively refers to chronic and progressive lung diseases causing not fully reversible limitations in airflow. COPD patients are at high risk for severe respiratory symptoms upon influenza virus infection. Airway epithelial cells provide the first-line antiviral defense, but whether their susceptibility and response to influenza virus infection changes in COPD has not been elucidated. Therefore, this study aimed to i) compare the susceptibility of COPD- and control-derived airway epithelium to influenza virus, and ii) assess protein changes during influenza virus infection by quantitative proteomics. Fluorescent stainings confirmed expression of human- and avian-type influenza virus receptors in primary human bronchial epithelial cells (phBECs) from COPD patients (n=4) and controls (n=3) differentiated at the air-liquid interface. Subjects were closely matched in age, sex, and smoking history and, for COPD-derived phBECs, included stage II (n=2), stage III (n=1) and stage IV (n=1). Proteomics of fully differentiated phBECs pre- and post-influenza A virus infection with A/Puerto Rico/8/34 (PR8) revealed no significant differences between GOLD stage II/ III COPD (n=3) and control phBECs in terms of flu receptor expression, cell type composition, virus replication, or protein profile pre- and post-infection. In contrast, COPD GOLD stage IV phBECs (n=1) showed a distinct pattern of flu receptor expression and a typical COPD phenotype as assessed by a literature-derived panel of 20 proteins and quantification of cell type composition. Independent of health state, proteomics showed a robust antiviral response to influenza virus infection, as well as upregulation of several novel influenza virus-regulated proteins.
2022-12-29 | PXD031461 | Pride
Project description:Continuous stress caused by smoking induces changes in the cell population of small airway epithelium, with basal cell hyperplasia and goblet cell metaplasia at the expense of ciliated cells, and there is now compiling evidence that basal cells play a key role in the early pathogenesis of Chronic Obtructive Pulmonary Disease (COPD). We hypothesized that COPD airway basal cells undergo transcriptomic changes during differentiation that are different from those observed in normal cells and can explain the formation of an abnormal epithelium. We performed microarray analysis of basal cells obtained from healthy non-smoker and COPD subjects and also mucociliary-differentiated cell cultures from the same basal cells. We compared the transcriptome of normal and COPD basal cells, mucociliary-differentiated normal and COPD cell cultures and also of basal cells with corresponding mucociliary-differentiated cultures for both normal and COPD.
2020-10-31 | GSE137557 | GEO
Project description:Rationale: Genome-wide association studies (GWAS) and candidate gene studies have identified a number of loci linked to susceptibility of chronic obstructive pulmonary disease (COPD), a smoking-related disorder that originates in the airway epithelium. Objectives: Since airway basal cell (BC) stem/progenitor cells exhibit the earliest abnormalities associated with smoking (hyperplasia, squamous metaplasia), we hypothesized that smoker BC have a dysregulated transcriptome linked, in part, to known GWAS/candidate gene loci. Methods: Massive parallel RNA sequencing was used to compare the transcriptome of BC purified from the airway epithelium of healthy nonsmokers (n=10) and smokers (n=7). The chromosomal location of the differentially expressed genes was compared to loci identified by GWAS and candidate gene studies to confer risk for COPD. Measurements and Main Results: Smoker BC have 676 known genes differentially expressed compared to nonsmoker BC, dominated by smoking up-regulation. Strikingly, 166 (25%) of these genes are located on chromosome 19, with 13 localized to 19q13.2 (p<10-4 compared to chance), including TGFB1, LTBP4, EGLN2 and NFKBIB, genes associated with risk for COPD. Conclusions: These observations provide the first direct link of known genetic risks for smoking-related lung disease with the specific population of lung cells that undergoes the earliest changes associated with smoking. The human airway basal cell transcriptome of 7 smokers versus 10 nonsmokers was compared using massive parallel RNA sequencing (Illumina HiSeq 2000).
2014-05-08 | E-GEOD-47718 | biostudies-arrayexpress